<!DOCTYPE html>
<html>

	<head>
		<meta charset="UTF-8">
		<title>简易计算器</title>
		<link href="css/index.css" rel="stylesheet" />
	</head>

	<body>
		<div class="container">
			<h3>简易计算器</h3>
			<form>
				<div>
					<input type="text" id='x' maxlength="10" />
					<select id='oper'>
						<option value="+">加</option>
						<option value="-">减</option>
						<option value="*">乘</option>
						<option value="/">除</option>
					</select>
					<input type="text" id='y' maxlength="10" />
					<span>=</span>
					<span id='result' class="result"></span>
					<input type="button" value="确认" id='ok' />
				</div>
				<div id='info' class="info"></div>
			</form>
		</div>
	</body>
	<script type="text/javascript" src="js/cal.js"></script>
	<script type="text/javascript" src="js/index.js"></script>

</html>